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LIN CHANGYOU, Liu XIAOLING, Wu YUXIAcom sh advance. 1990: THE FURTHER APPLICATION OF MAGNETOTELLURIC SOUNDING IN THE PROBE OF EARTHQUAKE PRECURSORS. Acta Seismologica Sinica, 12(2): 166-175.
Citation: LIN CHANGYOU, Liu XIAOLING, Wu YUXIAcom sh advance. 1990: THE FURTHER APPLICATION OF MAGNETOTELLURIC SOUNDING IN THE PROBE OF EARTHQUAKE PRECURSORS. Acta Seismologica Sinica, 12(2): 166-175.
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THE FURTHER APPLICATION OF MAGNETOTELLURIC SOUNDING IN THE PROBE OF EARTHQUAKE PRECURSORS

  • Lanzhou Seismological Institute. State Seismological Bureau

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  • Published Date: September 01, 2011
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    • Abstract
  • On the basis of the MTS theoretical analysis and numerical test of the measured data,some problems on the enhancement of the effect of monitoring earthquake precursors through measurement of deep electrical variations by the MTS method is discussed. The obtained results show that of the several defined MT apparent resistivities,the still unused apparent resistivity,the real part of the impedance has some unique advantages and can possibly become a better parameter for monitoring the deep electrical variation as an earthquake precursor. It is necessary to select the parameters having highter relative precision as the main parameters to be monitored on the basis of the analysis of various effects on the MT response functions,which result from the error distribution in different channels,the error propagation and accumulation in the computation process. The synthetic judgement method with multi-parameters is the basic method to distinguish the deep electrical variations as an earthquake precursor. The above mentioned conclusion is justified by some observed MTS data reflecting earthquake precursors.
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    • References (1)
  • [1] 兰州地震研究所大地电磁测深组,1981.与大地震有关的地壳深部的电性变化.大地电磁测深,80——88,地震出版社.

    [2] 林长佑、武玉霞、刘晓玲,1989.大地电磁响应函数估算中改进后的多道相关函数法及误差的综合评价.地球物理学报,32, 236——241,

    [3] 林长佑、武玉霞、刘晓玲,1988.大地电磁响应函数的除偏估算和误差研究.西北地震学报,10, 3, 25——38,

    [4] Spies, B. R. and Eggers, D. E., 1986. The use and misuse of apparent resistivity in electro——magnetic methods. Geophys., 51, 7, 1462——1471,

    [5] 林长佑、刘晓玲、蒋梅、武玉霞,1988.论中国西北某些地区地壳上地慢内的高导电层和地震区划的深部电性指标.地震学报,10,66——76,

    [6] Clark e, J., Gamble, T. D., Goubau, W. M., Koch, R. H, and Miraclcy, R. F., 1983. Remote——reference magnetotellurics: Equiment and procedures. Geophysical prospecting, 31, 1, 149——170,

    [7] 林长佑、张云琳、梁恕信、司玉兰、蒋梅、江钊,1983.内蒙、甘、宁某些地区地球上部电导率分布的横向变化特征.西北地震学报,5, 1, 31——42.

    [8] Kao, D, and Orr, D., 1982. Magnetotelluric studies in the Market Weighton area of eastern England. Geophys.].R. astr. Soc., 70, 2, 323——337.

    [1] 兰州地震研究所大地电磁测深组,1981.与大地震有关的地壳深部的电性变化.大地电磁测深,80——88,地震出版社.

    [2] 林长佑、武玉霞、刘晓玲,1989.大地电磁响应函数估算中改进后的多道相关函数法及误差的综合评价.地球物理学报,32, 236——241,

    [3] 林长佑、武玉霞、刘晓玲,1988.大地电磁响应函数的除偏估算和误差研究.西北地震学报,10, 3, 25——38,

    [4] Spies, B. R. and Eggers, D. E., 1986. The use and misuse of apparent resistivity in electro——magnetic methods. Geophys., 51, 7, 1462——1471,

    [5] 林长佑、刘晓玲、蒋梅、武玉霞,1988.论中国西北某些地区地壳上地慢内的高导电层和地震区划的深部电性指标.地震学报,10,66——76,

    [6] Clark e, J., Gamble, T. D., Goubau, W. M., Koch, R. H, and Miraclcy, R. F., 1983. Remote——reference magnetotellurics: Equiment and procedures. Geophysical prospecting, 31, 1, 149——170,

    [7] 林长佑、张云琳、梁恕信、司玉兰、蒋梅、江钊,1983.内蒙、甘、宁某些地区地球上部电导率分布的横向变化特征.西北地震学报,5, 1, 31——42.

    [8] Kao, D, and Orr, D., 1982. Magnetotelluric studies in the Market Weighton area of eastern England. Geophys.].R. astr. Soc., 70, 2, 323——337.
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